}
            }

            private Configuration inferScalaClasspath() {
                File scalaLibraryJar = findScalaJar(classpath, "library");
                File scala3LibraryJar = findScalaJar(classpath, "library_3");
                boolean isScala3 = scala3LibraryJar != null;
                if (scalaLibraryJar == null && scala3LibraryJar == null) {

        when:
        def file = ScalaRuntimeHelper.findScalaJar([new File("other.jar"), new File("scala-jdbc-1.5.jar"), new File("scala-compiler-1.7.jar")], "jdbc")

        then:
        file.name == "scala-jdbc-1.5.jar"
    }

    def "returns null if Scala Jar not found"() {
        when:

                    <td>Name</td>
                </tr>
            </thead>
            <tr>
                <td>inferScalaClasspath</td>
            </tr>
            <tr>
                <td>findScalaJar</td>
            </tr>
            <tr>
                <td>getScalaVersion</td>
            </tr>
        </table>
    </section>

            return;
        }

        // When Scala 3 is used it appears on the classpath together with Scala 2
        File scalaJar = ScalaRuntimeHelper.findScalaJar(scalaClasspath, "library_3");
        if (scalaJar == null) {
            scalaJar = ScalaRuntimeHelper.findScalaJar(scalaClasspath, "library");
            if (scalaJar == null) {
                return;
            }
        }

     *
     * @param classpath the class path to search
     * @param appendix the appendix to search for
     * @return a Scala Jar file with the specified appendix
     */
    @Nullable
    public static File findScalaJar(Iterable<File> classpath, String appendix) {
        for (File file : classpath) {
            Matcher matcher = SCALA_JAR_PATTERN.matcher(file.getName());
            if (matcher.matches() && matcher.group(1).equals(appendix)) {

        if (runtime != null) {
            FileCollection scalaClasspath = runtime.inferScalaClasspath(files);
            File compilerJar = runtime.findScalaJar(scalaClasspath, "compiler");
            if (compilerJar == null) {
                compilerJar = runtime.findScalaJar(scalaClasspath, "compiler_3");
            }

            parameters.getClasspath().from(getClasspath());
            parameters.getOutputDirectory().set(getDestinationDir());
            boolean isScala3 = ScalaRuntimeHelper.findScalaJar(getScalaClasspath(), "library_3") != null;
            parameters.getIsScala3().set(isScala3);
            if (isScala3) {
                parameters.getSources().from(getFilteredCompilationOutputs());
            } else {